Conveyer.



F. PISSLTHALER.

GONVEYEB.

APPLICATION FILED APB. 1, l1911.

Patented Apr. '2, r1491,2.'

(M l 11il l l l H im llll f1 2f. 'u f FRITZ FISSLTHALER, 0F-SALZBURG, AUSTRIA-HUNGARY.

CONVEYER.

Specification of Letters Patent.

Patented Apr. 2, 1912.

-Application'tiled April 1, 1911. Serial No. 618,270.

To all 'Lc/rom t may concern:

Be itknown that I, FRITZ FIssLTnALnR, a subject of the Emperor of Austria-Hungary, residing at Salzburg, in the Empire of AustriaHungary, haveinvented a new and useful Convcyer, of which the following is a specification.

My invention consists of a conveyer or the like produced in a novel manner from metallic sheets.

The sheets are first so bent in two lines parallel to their long edges, that the two side portions projecting to the same side are approximately at right angles to the central body, and the two side portions are dividedI by parallel cuts into` juxtaposed strips. The bodies of the several sheets are then twisted to form a tube, so that their strips form helical curves. Preferably 'in the helical curve'the free ends of the strips of the sheet in any turn of the. conveyer or the like are made to alternate with the free ends of the strips of the sheet in any neighboring turn and the free ends of all the Astrips are so bent as to form eyes, through which a wire can be passed for connecting the strips together. The bodies of the several sheets forming parts of the convcyer may be connected with one another at their ends in any known manner, say by screws and nuts or by rivets in lap-or butt-joints, or by welding.

I will now proceed to describe my invention with reference to the accompanying drawing, in which- Figurc 1 is a perspective view of a part of :i ronveyer or the'like constructed :lccording.; to my invention, Fig. 2 is an end view of the same, Fig. 3 is a development ofl a part of the conveyer, and Fig. 4 is a cross section through this part, after the two series of strips have been bent upward.

Similar letters of reference reifer to similar parts throughout the several views.

A convever or the like shown at Figs. v1

and 2 can be formed from a number of preflerably long rectangular, parallelogrammatic or trapezoid metallic sheets in the following manner. Each sheet is along its two longitudinal edges divided by parallel cuts into two series of exposed strips o Z) and c c, so that a centnz boef.' a is left uncut, as is clearly shown at Fig. 3. Then the sheet is bent in two parallel lines, so as to bend the two series of strips b Z) and c c upward, about at right. angles to the body a, as is shown at Fig. 4. lVhere so preferred, of course the sheet may be first bent in the said two parallel lines, before the two erect side portions of the sheet in Fig. 4 are cut up into two series ot' strips. Preferably before bending the sheet in the said two parallel lines the free 'ends of the strips b and c in each series are so bent as to form eyes, as is shown atFig. 1, so that a wire l can be passed through them. Now the body a of each sheet is in any known manner so twisted as to form a tube. Then the two lseries of strips I b and c c of the sheet are spread and form two combs. If the sheet is sufficiently long, its body (L may form one turn or more than one turn, perhaps several turns of the tube representing the central part of the conveyer shown at Figs. 1 and 2. It is essential, that the edges of the body a in any turn come in contact with the edges of the body in the next following turn and that the free'ends of the upper strips c c of the original sheet in any turn of the conveyer engage between the free ends of the lower strips b' b of the sheet in the next following turn, so that a wire fl can be passed through the eyes at these free ends for connectingh together the strips of the two series in the same helical curve (see Fig. 9). The bodies a a of the several sheets forming parts of-the conveyer or the like may be connected together at their ends in any known manner, for example by means of screws and nuts or rivets .in 1aporbuttjoints, or'by welding with the aid of an oxyhydrogen-blowpipe or the like.

The structure shown and described may be made from other materials than metallic sheets, in which case the bodies of the several sheets may be connected together in any known manner, for example by gluing or the like.

I claim:

l. A conveyer comprising a single integral strip of sheet like material having an intact central body portion spirally disposed to form a tubular supporting body, t-he margins of said strip being bent and having vhf.

their edges connected and forming a spiral edges connected and forming a spiral conconvlng portion.

2. conveyer comprising a single strip of sheet like material having an intact -x5 body. portion spiraliy disposed to form a tubular body," the margins of said strip being bent radially and having their outer veying portion.

FRITZ FISSLTHALER.

WVibnesses;` i

' ARTHUR W. Co'rrER, MATHILDE K. HELD. 

